The Genuine Innovations 20-Gram Threaded CO2 Cartridges can be used with all Genuine Innovations inflators that have a 3/8-inch-24 thread. The 20-gram size will fully inflate those high-volume mountain bike tires (29er, DH, etc.).

The most intuitive CO2 inflator on the market. All you have to do is twist your favorite CO2 cartridge into the HammerHead, and at the push of a button, you're back on the trail. As an added bonus, the HammerHead automatically detects your valve type for instant valve attachment while the trigger head leverages our patented push-to-inflate technology.
- Easy and controllable inflation
- Push-to-inflate technology
- Auto detect head for instant Presta or Schrader valve attachment
- Lightweight, compact design
- Weight: 26 grams
Includes:
(1) HammerHead inflator
(1) threaded 20 gram CO2 cartridge

20 grams of Genuine Inovations' exclusive size CO2 cartridge. Specifically designed for your larger volume 29ers, mountain and fat bike tires.
These non-threaded CO2 cartridges work great with the Ultraflate (#G20310) and Full Metal Jacket (#G20440) inflators.
Available in a 2-pack or 6-pack!